Fluid-driven pump



Dec. 21, 1948. F. A. LANE FLUID-DRIVEN PUMP Original Filed Dec. 18, 1S42 IN VEN TOR. FHBB A LANE,

AT TOHNEY l Patented Dec. 21, 1948 Fred A. Lane, Shelburn, Ind, assigner to Lane 'Motors, Inc., Terre Haute; Ind., a `corporation ,of v,Indiana Original application December 18,194.2Seria1 N0. 469.386. Divided and thisapplicatonapril115, 1946; Serial N0.- 16625202 The present invention relates to pumps,l and more particularly to double acting, high eiiiciency, high pressure pumps of novel construction.

The primary object of the invention is to provide a pump of the character described which shall be an improvement over pumps heretofore known. Another object of rtl'ie-im/'ention -is to provide a pump in which moving parts uwill be reduced to a minimum, packing Will-fbe. unnecessary, and the application vof power to the fluid to be pumped will be effected through a rotary cam. Further objects ofthe invention will appear as the description proceeds.

- To thev accomplishment` of the above andv related objects, my invention may `be embodied "in the lform illustrated in ythe accompanying drawings, attention being called to vtheiact; however, that the drawings are illustrative only, andthat change may be made in the specific construction illustrated and described, so long asthescope of the appended claims is not-violated.

Fig. 1 is a longitudinal `section through a pump constructed in accordance with my invention;

. Eig. 2 is a transverse section taken'substantlally on the line 2-2 of Fig. l1;

Fig. 3 is a ltransverse-section taken substantially on the line 3-3 of Fig; 1; and

Fig. 4 is a flat `projection of the rotary cam forming lan element of myinvention.

Referring more particularly to the drawingsf,-it will be seen that I have illustrated av housing-|00, formed tov provide a cylindrical lchan'iber |0| at one end of which 4is formed a socket |02 -receiving an anti-friction bearing |03 forming ajournal support -for oneend of a shaft |04; -the opposite end of which is 'journalled in an anti-friction bearing |05 carried inl av suitablyfor-med socket |06 in a closure head |01 forthe opposite end of thecylinder. A disc'il; having an external periphery such as to 't snugly within the chamber |0|,is11"1xedor keyed to one end of the shaft |04, and is formed at one point in'its periphery with a radial notchy |09. A similar disc H0, havinga similar-notch is fixed or' by the reference numeral 4| I4.; and the vfoot ||5 of a follower Hioscillably mountedin, a projec.-V tion .I I1 of the housing |00 is operativelyengaged in .the said cam groove IM'. "Said cam .trackis preferably ofthefform.illustratedfin Eig;A rfcom, a

" 6 Claims. (01.103ee-d4`) prising a continuous -groovemextendingi lthree timesv aboutI the periphery of the piston il I8l and comprising arst reach 49 extending-iromthe right-hand end of the-piston as viewed infFig; 1

, to the left-hand end thereof vwitl-iin a peripheral extent -of-270"-; a'return -reach 50 eXtend-lngffrom the left-hand- -end ofi-the,pistonr to 'the righthand-end thereof within al peripheral-- extent fof 270; aseco-nd advancing reach 5| extending-from the right-hand end ofthe piston tolthe left-hand H'Sb,V H90, and 19d. Since the assemblies las! so'ciated with these cylinders a-re Aiden-tical, only I one will be described.

Apart |20- provides communication 'between the-interior of the cylinder `lillv and the; interior of the cylinder |119; but said port -is locatedgin assembly |24 is secured `to the mouth yo-f' )the cylinderylZ, said unit providing anyinlet vpassage l 25 controlled by a check vvalve "|26 `md .an outletvpassage'lz controlled by a lcheck valve |28.

VAssociajged Withithe opposite end offthehousinermi). is.. aseres 0f radiallyrroiecting cylinders L29, |2311, |2912, Hic,v and IQZSd.. .-Since thaas semblies associated with the cylnderslofthe, |29 Series are identical .onlyonewillbedescribed.

A y@rtl 30 providesommunaticnbetwecn the intermr .0f the; ,cylinder :l0 leandtheintcriorof thefylmder. 12S. `lout `'said part, is.. arrange, regfistrywth .ci disc .H nsw. ich.: at alltimesuex cept when the notch registers with thepoxt I 3 0;. masks. and` closes y said` port.

f, A piston .|--3| isreciprocablymounted within the cylinder |:29andisprovided withareduced piston extension |32 reciprocable ina-reducedcyb inder |33. With said cylinder I|83`is associated. a control unit 1.13.4 comprising.aninletfpassase |85 controlled by acheck valve |36 and an outlet passage |31 controlled by a check valve |38.

Relief means must preferably be provided in association with each of the cylinders of the ||9 series and with each of the cylinders of the |29 series to facilitate operation of the pistonsr |2l, etc., and 13|, etc., therein. Thus, each cylinder.` of the I 9 series is formed in its outer end with a port such as the port |81, and each cylinder of the |29 series is similarly formed in its outer end with a port such as the port |88. Obviously, the provision of these ports in the cylinders of the two series will prevent such entrapment of fluid above the pistons of the |2| series and the pistons of the |3| series as would interfere with their operation. Preferably, but not necessarily, the.v

port like the port |81 of each cylinder of the ||9 series will be connected with the port like the port |88 of the corersponding cylinder of theV |29 series by a conduit like the conduit |89, so that fluid expelled from the cylinder I9, for instance, as the piston l2! is driven upwardly, will be forcedthrough the port |81, conduit |89, and port |88 to assist in effecting the downward movement of the piston |3|.

Of course, all of the inlet passages |25 and |35 are suitably connected to one or more sources of fluid to be pumped, while all of the outlet passages |21 and |31 are suitably connected to one or more points of use of fluid under pressure.

As the piston H3 moves from its illustrated position toward the left, during clockwise rotation of the shaft |04, as viewed from the right, fluid contained in the left-hand end of the cylinder |0| will be forced through the notch |09 and port into the cylinder ||9 to elevate the piston |2|. Such movement of the piston |2| forces the piston |22 upwardly in the cylinder |23. Initial movement of the piston |22 will close the check valve |26 and open the check valve |28,

and continued movement of the said piston will During such movement of the piston I3 toward the left, fluid will first be drawn from the nterior of the cylinder |29 through the port |30 and the'registering notch into the right-hand end of the cylinder |0|, thus drawing the piston |3| downwardly to draw the piston |32 down! wardly. `Such movement of the piston |32 will close the check valve |38 and open the check valve |36 to draw uid into the cylinder |33 through the inlet passage |35. At the moment when the piston |3| has reached the lower limit of its stroke, the notch l|| will move out of registry with the port |30 and into registry with the port |30a, whereupon further movement of the piston ||3 toward the left will cause operation of the piston within the cylinder |29a in the same manner.

This application is a division of my co-pending application Serial No. 469,386 led December 18, 1942, upon which issued Patent 2,411,438 Vember k19, 1946.

I claim as my invention:v

. 1; Pumping. mechanism comprising a. cylindri r on Nocal housing, a shaft mounted for rotation with a portion thereof within said housing, a series of radially-disposed cylinders peripherally grouped about said housing and each communicating with the interior of said housing adjacent one end of vthe'latter,.thrpugh a porgta valve-v disc fixed on said .shft'withinllsaid housing fin closing relation to said ports, said valve disc being formed with a notch in its peripheral surface providing, when in registry with one of said ports, communication Abetween the associated cylinder and the interior V,of said housing, a second series of radially-disposed cylindersv peripherally grouped about said housing and each communicating with the interior of said housing" adjacent the opposite end ofjthe latter through a port, a second valve disc fixed on `saidV shaft within said housing in closing cal housing, a shaft mounted for rotation with.

atportion thereof within said housing, a series of radially-disposed cylinders peripherally grouped about said housing and each communicating withI the interior of said housingadjacent one end of thelatter through-a port, a valve disc fixed on said shaft within said housing in closing relation to said ports,rsaid valve disc being formed with a notch in its peripheral surface providing, when in registry with one of Asaid ports, communicationv between the associated cylinder and the interior of said housing, a second series of radially-disposed cylinders peripherally grouped about said housing vand each communicating with the in` terior of said housing adjacent the opposite end of the latter through a port, a second valve disc fixed on said shaft within said housing in closing relation to said last-mentioned ports, said second valve disc being formedk with a notch in its peripheral surface providing, when in registry with one of said last-mentioned ports, communication between the associated cylinder and the interior of said housing, Aa valved inlet and a valved outlet for each cylinder of each series, independent of said ports, a piston axially reciprocable in said housing between said discs, a continuous cam groove formed in the peripheral surface of said piston, andmeans supportedvby said housing` against movementaxially of said housing and engaging in said cam groove to convert rotation of said piston into reciprocation thereof.

3. Pumping mechanism comprising a cylindrical housing, a shaft mounted for rotation with av portion thereof within said housing, a series ofradially-disposed cylinders` peripherally grouped about said housing and each communicating with the interior of saidhousing adjacent one end of thelatterthrough-a port, a valve disc fixed on said shaft within said housing in closing relation to said ports, said valve disc being formed with a notch in its peripheral surface providing, when in registry with one of said ports, communication between the associated cylinder and the interior of said housing, a second series of radially-disposed cylinders, peripherally grouped about said housing-and. each communicating .with the interior of said housing adjacent the opposite end of the latter through a port, a second valve disc xed on said shaft within said housing in closing relation to said last-mentioned ports, said second valve disc being formed with a notch in its peripheral surface in peripheral registry with the notch in said first disc and providing, when in registry with one of said last-mentioned ports, communication between the associated cylinder and the interior of said housing, a valved inlet and a valved outlet for each cylinder of each series, independent of said ports, a piston axially reciprocable in said housing between said discs, and means for converting rotation of said shaft into reciprocation of said piston.

4. Pumping mechanism comprising a cylindrical housing, a shaft mounted for rotation with a portion thereof within said housing, a series of radially-disposed cylinders peripherally grouped about said housing and each communicating with the interior of said housing adjacent one end of the latter through a port, a piston reciprocable in each of said cylinders and operatively associated with the plunger of a pump assembly, a valve disc xed on said shaft within said housing in closing relation to said ports, said valve disc being formed with a notch in its peripheral surface providing, when in registry with one of said ports, communication between the associated cylinder and the interior of said housing, a second series 3 of radially-disposed cylinders peripherally grouped about said housing and each communicating with the interior of said housing adjacent the opposite end of the latter through a port, a piston reciprocable in each cylinder of said second series and operatively associated with the plunger of a pump assembly, a second valve disc fixed on said shaft within said housing in closing relation to said last-mentioned ports, said second valve disc being formed with a notch in its peripheral surface providing, when in registry with one of said last-mentioned ports, communication between the associated cylinder and the interior of said housing, a piston axially reciprocable in said housing between said discs, a body of uid entrapped in said housing and in said cylinders between each end of said last-named piston and the adjacent ends of the pistons in said series of cylinders, respectively, and means for converting rotation of said shaft into reciprocation of said piston.

5. Pumping mechanism comprising a cylindrical housing, a shaft mounted for rotation with a portion thereof within said housing, a series of radially-disposed cylinders peripherally grouped about said housing and each communicating with the interior of said housing adjacent one end of the latter through a port, a piston reciprocable in each of said cylinders and operatively associ ated with the plunger of a pump assembly, each of said cylinders being provided with a relief port in that portion thereof remote from its firstmentioned port, a valve disc fixed on said shaft within said housing in closing relation to said ports, said valve disc being formed with a notch in its peripheral surface providing, when in registry with one of said ports, communication between the associated cylinder and the interior of said housing, a second series of radially-disposed cylinders peripherally grouped about said housing and each communicating with the interior of said housing adjacent the opposite end of the latter through a port, a piston reciprocable in each cylinder of said second series and operatively associated with the plunger of a pump assembly, each of the cylinders of said second series being provided with a relief port in that portion thereof remote from its first-mentioned port, a second valve disc fixed on said shaft within said housing in closing relation to said last-mentioned ports, said second valve disc being formed with a notch in its peripheral surface providing, when in registry with one of said lastmentioned ports, communication between the associated cylinder and the interior of said housing, a piston axially reciprocable in said housing between said discs, a body of fluid entrapped in said housing and in said cylinders between each end of said last-named piston and the adjacent ends of the pistons in said series of cylinders, respectively, and means for converting rotation of said shaft into reciprocation of said piston.

6. Pumping mechanism comprising a cylindrical housing, a shaft mounted for rotation with a portion thereof within said housing, a series of radially-disposed cylinders peripherally grouped about said housing and each communicating with the interior of said housing adjacent one end of the latter through a port, a piston reciprocable in each of said cylinders and operatively associated with the plunger of a pump assembly, each of said cylinders being provided with a relief port in that portion thereof remote from its firstmentioned port, a valve disc xed on said shaft Within said housing in closing relation to said ports, said valve disc being formed with a notch in its peripheral surface providing, when in registry with one of said ports, communication between the associated cylinder and the interior of v said housing, a second series of radially-disposed cylinders peripherally grouped about said housing and each communicating with the interior of said housing adjacent the opposite end of the latter through a port, a piston reciprocable in each cylinder of said second series and operatively associated with the plunger of a pump assembly, each of the cylinders of said second series being provided with a relief port in that portion thereof remote from its first-mentioned port, conduit means connecting the relief port of each cylinder of said first series with the relief port of a corresponding cylinder of said second series, a. second valve disc fixed on said shaft within said housing in closing relation to said last-mentioned ports, said second valve disc being formed with a notch in its peripheral surface peripherally so related to the notch in said first disc that said disc notches register simultaneously with cylinders whose relief ports are connected, providing, when in registry with one of said last-mentioned ports, communication between the associated cylinder and the interior of said housing, a piston axially reciprocable in said housing between said discs, a body of fluid entrapped in said housing and in said cylinders between each end of said last-named piston and the adjacent ends of the pistons in said series of cylinders, respectively, and means for converting rotation of said shaft into reciprocation of said piston.

FRED' A. LANE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,816,403 Schaer July 28, 1931 2,411,438 Lane Nov. 19, 1946 

